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General and Gameplay Programming Programming

Started by Theses June 23, 2000 11:25 PM

0 comments, last by Theses 23 years, 10 months ago

Theses

122

Author

June 23, 2000 11:25 PM

i''m just wondering for any function say for example here glColor3f which has 3 parameters all floats now for the question is there any difference between glColor3f(1.0, 1.0, 1.0); and glColor3f(1.0f, 1.0f, 1.0f); or in other words does this promotion to double have any effect on the first one

Shannon Barber

1,684

June 24, 2000 02:32 PM

quote:Original post by Theses

i''m just wondering for any function say for example here
glColor3f
which has 3 parameters all floats
now for the question
is there any difference between
glColor3f(1.0, 1.0, 1.0);
and
glColor3f(1.0f, 1.0f, 1.0f);
or in other words does this promotion to double have any effect on the first one

Depends on the compiler, if it sticks to its guns, the first one will store the 1.0''s as doubles in ram, and convert them to floating points before each function call (SLOW!)- the second one will just call the funcion with the fp values.

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